trading halt, page-4

JOINT ASX/MEDIA ANNOUNCEMENT
Monday, 22 October 2007
Anzon and ARC announce merger discussions
The Boards of Anzon Australia Limited (“Anzon”) (ASX:AZA) and ARC Energy Limited
(“ARC”) (ASX:ARQ) today announced that they are currently negotiating the final
terms of a proposed merger of the companies (“Merger”) and have requested a
trading halt in the shares of both of the Companies for a period of 2 days while
negotiations are finalised.
The proposed Merger remains subject to the agreement of final outstanding terms
and execution of a merger implementation deed. An agreement to proceed with
the Merger will conclude Anzon’s strategic review process announced on 17
September, 2007. Anzon received a number of proposals and has elected to pursue
the Merger with ARC on an exclusive basis.
About Anzon
Anzon is an upstream oil and gas company listed on the ASX on 15 December 2004,
to acquire, explore, develop and commercialise oil and gas fields in Australasia.
Anzon’s principal asset is a 40% interest in the Basker, Manta and Gummy Fields of
which Anzon is also the operator. Anzon has built an enviable record of declaring a
profit in each full year since listing. The key to this performance has been the rapid
development of the Basker Manta oil fields by Anzon’s technical team of staff and
contractors. Merging the BMG Project with a more balanced portfolio of assets has
been a stated goal of Anzon.
About ARC
ARC is one of Australia’s pre-eminent mid-tier energy companies, owning and
operating oil and gas interests in the Perth, Canning and Bass Basins and
internationally. ARC has an aggressive onshore and offshore exploration and
development drilling program. It has a successful track record of the early adoption
of innovative technical and commercial practices and project and corporate
delivery.
FOR FURTHER